Abstract
The shape of a 90° ⟨112⟩ tilt boundary in bismuth and a boundary in zinc bicrystals was analyzed, which had developed during annealing at elevated temperatures when the boundary had migrated due to the magnetic free energy density difference across the boundary while the boundary was fixed on the lateral sample surfaces. After annealing in an external magnetic field the 90°⟨112⟩ boundary in bismuth became faceted. This evidenced the pronounced anisotropy of boundary energy with respect to its inclination. The random (non-tilt) boundary in the Zn bicrystal assumed a curved shape after magnetic annealing. Evaluation of the curvature of the boundary segments with the highest constant curvature permitted estimation of the upper limit of the energy of differently inclined boundary sections in Zn: 0.27 and 0.41 J m−2.
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